<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
<script>
  // let sum =0
  // for  (let i = 0;i <=100;i +=2){
  //   if(i%2===0){
  //   sum += i
  //   }
  // }
  // console.log(sum)
  // document.write(sum)

  // for(let i = 1;i <=5;i++){
  //   for(let j = 1; j <=5; j++){
  //     document.write(`★`)
  //   }
  //    document.write(`<br>`)
  // }

  for (let i = 1; i <=5; i++ ){
    for ( let j = 1; j <= i; j++){
      document.write ('☺')
    }
    document.write ('<br>')
  }

</script>  
</body>
</html>